ON THE MECHANISM OF PARTICLE HEATING AND ACCELERATION IN THE JOVIAN IONOSPHERE

被引：5
|
作者：
SHAPOSHNIKOV, VE
ZAITSEV, VV
机构：
[1] Electronics and Plasma Physics Department, Applied Physics Institute, Russian Academy of Science, Nizhny Novgorod, Russia
来源：
PLANETARY AND SPACE SCIENCE | 1993年 / 41卷 / 05期
关键词：
D O I：
10.1016/0032-0633(93)90067-C
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The acceleration mechanism of the charged particles connected with a potential difference along the Jovian magnetic field is proposed. This model is developed on the basis of the known phenomenon of the partially ionized magnetized plasma resistance increase in the presence of a nonstationary current. The region of high resistance is formed above the ionosphere plasma density maximum when the Io current tube is going through this region. For typical Jovian ionosphere conditions the resistance is increased by about seven orders. The potential difference accelerates particles up to several MeV in this region. Here, we also take into account that the efficiency of electron acceleration is limited by the Bunneman turbulence excited due to an electron-ion relative motion. The plasma is heated due to the Joule dissipation and the Bunneman turbulence by several orders of keV.
引用
收藏
页码：341 / 346
页数：6
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